She could use some guitar lessons, for starters. The way she fingers that G7 chord on her nice steelstring in the beginning is bound to dampen almost every string inadvertently and make the instrument sound like a jumble of rusty old thin wire.
Needless to say, I would gladly volunteer as a guitar teacher with this girl.
Wherever you see a guitar being played in commercials or in porn, watch out for the nonsense they would be producing if you could actually hear what they are fretting.
Another climax of such nonsense can be seen in another porn video where a lesbian more or less punishes a girl for not having practiced enough on the guitar. But the girl´s beautiful fingernails are way too long on both hands in order to fret even one note properly in the first place. It is physically impossible to play with such nails, at least on the fretting hand.